Objectives: Osteochondroma (OC) is one of the most common benign tumors of long bones but is rarely found in facial skeleton.However, mandibular condylar OC can result in morphologic and functional disturbance, including facial asymmetry, malocclusion and temporomandibular joint (TMJ) dysfunction.We hereby present our cases series with simultaneously orthognathic surgery and intraoral approach for endoscopic condylectomy for treating the facial asymmetry secondary to OC.